I too have the Summit Viper
I just raise the top section high enough to grab the bar, pull myself up on to the lower platform & slide down the upper section over me
no fumbling over the bar or making un necessary noise works great but I am smaller then the average man

I have a summit goliath and I am 6'2 175lbs and have a prosthetic left leg and still use a climber,they are right you need to lift the stand as high as you can reach up and pull yourself up on the climber then lower the seat part down and start your climb

I too have the Summit Viper
I just raise the top section high enough to grab the bar, pull myself up on to the lower platform & slide down the upper section over me
no fumbling over the bar or making un necessary noise works great but I am smaller then the average man

I too have the Summit Viper
I just raise the top section high enough to grab the bar, pull myself up on to the lower platform & slide down the upper section over me
no fumbling over the bar or making un necessary noise works great but I am smaller then the average man

Thats the same trick I use. And I'm a huge guy.
Practice at home or in the nearby woods with all your thick hunting clothes on too. It makes a big difference on how well the stand fits around you and how graceful you can or cannot be, lol.
Sometimes I'll bag up my bibs and jacket and climb without them on. Then once I'm situated, I'll haul up the bag and bow/gun.

Certain trees are more awkward than others due to the shape of the trunk, etc.